Class: Rewriter

Inherits:
SexpProcessor
  • Object
show all
Defined in:
lib/rewriter.rb

Overview

Rewriter (probably should be renamed) is a first-pass filter that normalizes some of ruby’s ASTs to make them more processable later in the pipeline. It only has processors for what it is interested in, so real the individual methods for a better understanding of what it does.

Instance Method Summary collapse

Instance Method Details

#process(exp, _src = nil, _timeout = nil) ⇒ Object 



21
22
23
 
# File 'lib/rewriter.rb', line 21

def process exp, _src = nil, _timeout = nil
  super(exp)
end

#rewrite_defn(exp) ⇒ Object 



25
26
27
28
29
30
31
32
33
34
35
36
37
 
# File 'lib/rewriter.rb', line 25

def rewrite_defn(exp)
  case exp.last[0]
  when :ivar then
    ivar = exp.pop
    exp.push s(:scope, s(:block, s(:return, ivar)))
  when :attrset then
    var = exp.pop
    exp.push s(:scope,
               s(:block,
                 s(:return, s(:iasgn, var.last, s(:lvar, :arg)))))
  end
  exp
end